Why do conservatives keeping using campaign music by liberal artists?

There have been an increasing number of examples — especially in the past decade — of conservative politicians using songs in their campaigns by artists who do not want their music used in that way. Recently, a member of Survivor who owns the copyright for the Rocky III anthem, "Eye of the Tiger," asked Newt Gingrich to stop using the song at rallies (the problem being that not only is the song being used in public, but it also ends up soundtracking YouTube clips from the same rally and lives on eternally on the web). Likewise, British Funk/Rock band The Heavy freaked when Newt's people blared their "How You Like Me Now?" hit to rile up supporters. It almost seems like these occurrences happen on a weekly basis now. Usually, when asked to cease use, the politicians' campaigns comply immediately. But, with it happening so frequently, wouldn't a campaign manager be a little more aware of the music they're deciding to co-opt? And if a campaign refuses, are there really any legal ramifications?

Republicans keep throwing everybody against the wall to see who sticks in terms of a revolutionary leader. Though a hypocritical radio blowhard seems to have emerged the winner, in the recent past the party has slung a plumber and a beauty queen/moose killer at the public to no avail. Our favorite new awkward Republican is Hi-Caliber, a construction-worker-turned-rapper from New Jersey.